what eval formula and LM Programmer settings would you suggest I try?

 

0v = 10AFR
5v = 15.99AFR

Eval = 10+(5.99*x/255)

 

success! thank you very much for the help tephra.

its logging pretty darn close to my lm1 readings, but its a little off in some places as seen in the attached log.



widebandAF is my LM1 and WBO2 is the analog signal. is that difference something that can be adjust for in the eval formula?

 

Given you have done the voltage tests I would trust the analog signal over the serial.

in LMProgrammer - do you have it set to instant response or averaged?

Also some older versions of evoscan were a bit buggy with LM1/LC1 integration...

Do a pull and log both - and also log IPW

 

yes i have it sent to instant response.

great, so it sounds like i'm all set! thank you very much for the help sir.

 

yeh.

do a pull though and log both - you should get similar readings

 

if I want to log thru the ecu per this thread, and control my ecu closed loop, and have an in car afr gauge. Is this too much going on for 1 Lc 1 ? Or do I need two?

 

I have an ECU PINOUT question: For the USDM EVO 9, some say Pin 73, and some say Pin 71. confused... Speaking of which, I cannot open mrfred's "USDM EVO 9 Pinout here" zip folder, it keeps saying invalid file.

https://www.evolutionm.net/forums/3012204-post47.html

Halp!

 

http://evoecu.logic.net/wiki/USDM_IX_ECU_Pinout

Front O2 is pin 71, rear is 73.

The post you linked to looks like it's from the GEMS manual, and it's probably for a 3-plug non-USDM vehicle.

 

I don't know if I missed something while reading through all of these pages, but what is the physical method for removing the rear o2 sensor. I saw that the link on the 1st post no longer works so I'm not sure if I can just unplug it or whether a resistor is required or not.

 

what is the advantage of logging IPW... other than figuring out inj duty cycle?

I;ve been logging both and there are slight difference between the two during transitional periods such as rolling into the throttle or lifting off. For the most part they are with in a couple 1/10ths of each other.

 

Does anyone know if this works with 94170715 rom? I try to log AFR and just get a static number. Any suggestions?

 

yes of course it will. the rom has nothing to do with it really its all evoscan related.. you just set the rear o2 into simulation on the rom is all.

 

Do you still have to make the same MUT value changes? My MUT12 88B5 should I still change it 8409? I have made all the correct changes in evoscan for equation and such.

I'm going to recheck my ground and signal strength when I pick up a multimeter. Maybe this is the reason for the static value in evoscan.

 

If its not set to that value in your mut table then id say yes.. evoscan needs to communicate with mut12 to read properly.